Diet effecting period?

Olivia • I`m 13 am year old girl and I`m new to this stuff
Does eating junk food and unhealthy stuff effect your period? I haven't had my period in months now, and I doing really eat healthy, in 5th grade I was named for Junk Food Queen cause I brought junk food everyday for snack. So should I start eating healthy? I'm 13 and kinda worried